<!DOCTYPE HTML>
<html>
<body>

<canvas id="myCanvas" width="200" height="100" style="border:1px solid #c3c3c3;">
Your browser does not support the canvas element.
</canvas>


<script type="text/javascript">

var c=document.getElementById("myCanvas");
var cxt=c.getContext("2d");
var grd=cxt.createLinearGradient(0,0,275,50);
grd.addColorStop(0,"#FF0000");
grd.addColorStop(1,"#0000FF");


cxt.fillStyle=grd;
cxt.fillRect(0,0,175,50);

</script>

</body>
</html>
